Forces and Energy Flashcards

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1
Q

Law of conservation of energy

A

Energy cannot be created or destroyed, only transferred

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2
Q

splitting atoms

A

nuclear
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3
Q

slingshot

A

elastic potential
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4
Q

something moving

A

kinetic
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5
Q

inverter

A

electrostatic
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6
Q

something falling

A

gravitational potential
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7
Q

speaker

A

sound
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8
Q

fire

A

thermal
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9
Q

torch

A

light
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10
Q

food

A

chemical
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11
Q

Law of conservation of energy

A

Energy cannot be created or destroyed, only transferred

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12
Q

conduction type

A

thermal energy transfer

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13
Q

convection type

A

thermal energy transfer

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14
Q

radiation type

A

thermal energy transfer

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15
Q

conduction definition (4)

A

When a solid is heated
The particles gain energy and vibrate more.
The particles collide into neighboring particles and pass along the energy.
This causes the neighboring particles to vibrate more.

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16
Q

convection definition (8)

A

When a fluid (liquid or gas) is heated
The particles gain energy; this makes them move faster.
When this happens they move further apart.
This means the fluid is less dense so it will rise.
As the warm fluid rises and meets the cooler fluid it cools down
And because of this, it becomes denser.
When it becomes denser than the surrounding fluid it will start to sink.
This is a convection current.

17
Q

radiation definition (3)

A

All objects emit radiation in the form of infrared waves.
This can be referred to as thermal radiation or infrared radiation.
As infrared radiation is an electromagnetic wave, it can even travel through a vacuum.

18
Q

Unit of measurement for MASS

A

kg

19
Q

definition of MASS

A

the amount of matter an object has

20
Q

Unit of measurement for VOLUME

A

21
Q

definition of VOLUME

A

the space that matter takes up

22
Q

Unit of measurement for DENSITY

A

kg/m³

23
Q

definition of DENSITY

A

the mass per unit volume

24
Q

DENSITY =

A

MASS/VOLUME

25
Q

1kg (in g)

A

1000g

26
Q

1L (in ml, and cm³)

A

1000ml or 1000cm³

27
Q

1ml = (in cm³)

A

1cm³

28
Q

What is the density of water

A

1g/cm³

29
Q

definition of DENSITY

A

the mass per unit volume

30
Q

DENSITY =

A

MASS/VOLUME